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Fukushima plant’s new ice wall not watertight

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In this Feb. 10, 2016, file photo, members of a media tour group wearing protective suits and masks walk together after they receive a briefing from Tokyo Electric Power Co. employees (in blue) in front of storage tanks for radioactive water at the tsunami-crippled Fukushima Dai-ichi nuclear power plant in Okuma, Fukushima Prefecture

TOKYO (AP) — Coping with the vast amounts of ground water flowing into the broken Fukushima nuclear plant — which then becomes radiated and seeps back out — has become such a problem that Japan is building a 35 billion yen ($312 million) “ice wall” into the earth around it.
But even if the frozen barrier built with taxpayers’ money works as envisioned, it won’t completely block all water from reaching the damaged reactors because of gaps in the wall and rainfall, creating as much as 50 tons of contaminated water each day, said Yuichi Okamura, a chief architect of the massive project.

“It’s not zero,” Okamura said of the amount of water reaching the reactors in an interview with The Associated Press earlier this week. He is a general manager at Tokyo Electric Power Co., or TEPCO, which operates the facility that melted down after it was hit by a tsunami in 2011, prompting 150,000 people to evacuate.

Workers have rigged pipes that constantly spray water into the reactors to keep the nuclear debris inside from overheating, but coping with what to do with the resulting radiated water has been a major headache. So far, the company has stored the water in nearly 1,000 huge tanks around the plant, with more being built each week.

TEPCO resorted to devising the 1.5-kilometer (1-mile)-long ice wall around the facility after it became clear it had to do something drastic to stem the flow of groundwater into the facility’s basement and keep contaminated water from flowing back out.

“It’s a vicious cycle, like a cat-and-mouse game,” Okamura said of the water-related issues. “We have come up against many unexpected problems.”

The water woes are just part of the many obstacles involved in controlling and dismantling the Fukushima Dai-chi plant, a huge task that will take 40 years. No one has even seen the nuclear debris. Robots are being created to capture images of the debris. The radiation is so high no human being can do that job.

The ice wall, built by construction company Kajima Corp., is being turned on in sections for tests, and the entire freezing process will take eight months since it was first switched on in late March. The entire wall requires as much electricity as would power 13,000 Japanese households.

Edward Yarmak, president of Arctic Foundations, based in Anchorage, Alaska, which designs and installs ground freezing systems and made an ice wall for the Oak Ridge reactor site, says the solution should work at Fukushima.

“The refrigeration system has just been turned on, and it takes time to form the wall. First, the soil freezes concentrically around the pipes and when the frozen cylinders are large enough, they coalesce and form a continuous wall. After time, the wall increases in thickness,” he said in an email.

But critics say the problem of the groundwater reaching the reactors was a no-brainer that should have been projected.

Building a concrete wall into the hill near the plant right after the disaster would have minimized the contaminated water problem considerably, says Shigeaki Tsunoyama, honorary professor and former president of University of Aizu in Fukushima.

Even at the reduced amount of 50 tons a day, the contaminated water produced at Fukushima will equal what came out of Three Mile Island’s total in just eight months because of the prevalence of groundwater in Fukushima, he said.

Although TEPCO has set 2020 as the goal for ending the water problems, Tsunoyama believes that’s too optimistic.

“The groundwater coming up from below can never become zero,” he said in a telephone interview. “There is no perfect answer.”

Okamura acknowledged the option to build a barrier in the higher elevation near the plant was considered in the early days after the disaster. But he defended his company’s actions.

The priority was on preventing contaminated water from escaping into the Pacific Ocean, he said. Various walls were built along the coastline, and radiation monitors show leaks have tapered off over the last five years.

Opponents of nuclear power say the ice wall is a waste of taxpayers’ money and that it may not work.

“From the perspective of regular people, we have serious questions about this piece of research that’s awarded a construction giant,” says Kanna Mitsuta, director of ecology group Friends of the Earth Japan. “Our reaction is: Why an ice wall?”

http://mainichi.jp/english/articles/20160428/p2g/00m/0dm/096000c

 

 

April 28, 2016 Posted by | Fukushima 2016 | , | Leave a comment

TEPCO to dismantle top of exhaust stack at Fukushima plant due to fractures

Radiation measurements conducted at the base of the structure in 2013 stood at an estimated 25 sieverts per hour — an extremely high level that would kill nearly everyone exposed for that long.

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The fractured steel beam section of the exhaust stack pillar at the No. 1 and 2 reactors of the Fukushima No. 1 Nuclear Power Plant.

Tokyo Electric Power Co. (TEPCO) will begin dismantling the upper section of the joint exhaust stack for the No. 1 and 2 reactors of its Fukushima No. 1 Nuclear Power Plant in fiscal 2018, company officials announced on April 25 during a meeting with the Nuclear Regulation Authority (NRA).

NRA officials had advised TEPCO to disassemble the structure due to fractures in its pillars that increased the risk of it collapsing.

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The joint exhaust stack for the No. 1 and 2 reactors of the Fukushima No. 1 Nuclear Power Plant, whose upper section has been fractured.

Because the vent to reduce the pressure of the nuclear reactor containment vessels contaminated the stack in the 2011 nuclear disaster at the plant, and it is releasing extremely high radiation, the work will be undertaken from a distance utilizing a large crane. The work is expected to be completed in fiscal 2019.

Explaining the dismantling plans during the NRA meeting, TEPCO officials said that fractures or deformities had been detected in a total of eight different sections of the pillars’ steel joints, which are found at approximately the 66 meter-mark of the exhaust stack. The structure stands at a total height of around 120 meters.

The cracks are thought to have been caused by the hydrogen explosions that occurred during the disaster.

Radiation measurements conducted at the base of the structure in 2013 stood at an estimated 25 sieverts per hour — an extremely high level that would kill nearly everyone exposed for that long.

While TEPCO has determined that the structure “would not fall over even if an earthquake of the same intensity as that which struck during the Great East Japan Earthquake (an upper level 6 on the Japanese scale) were to occur again,” the utility decided to dismantle the top section as it would have repercussions on the reactor decommissioning work taking place in the area in the unlikely event of the structure’s collapse.

http://mainichi.jp/english/articles/20160425/p2a/00m/0na/024000c

April 28, 2016 Posted by | Fukushima 2016 | , | Leave a comment

Thyroid Cancer in Fukushima Children: When the Language and Information Gaps Mislead

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With the year 2016 marking the passage of five years since the Fukushima nuclear accident, many writings—articles, editorials, academic papers—have been released reflecting on the first five years after the accident. Some of the writings address a psychosocial aspect of the accident such as “problems” caused by the stress of evacuation and the “unwarranted” fear of radiation, dismissing the potential health effects of radiation exposure, even ignoring the science. Others focus on the alleged withholding of medical data by authorities, speculating on the health effects of the Fukushima accident reaching even the United States.

Official data and information available in English are often limited and biased. Transparency and impartiality of such information, released by the government and international agencies, can be influenced by ulterior motives other than public health protection. However, without a fluency in Japanese and an ability to navigate through and comprehend the mass of official and unofficial information only available in Japanese, it may not become obvious that the transmission of accurate information is indeed hindered by the language barrier.

Furthermore, followers of numerous government committee meetings regarding the health effects of the Fukushima nuclear accidents—most of them live streamed on the Internet—have witnessed a systematic underestimation of health effects due to low-dose radiation exposure, with the claim of the outdated and unscientific 100 mSv threshold discourse. Despite concerns from local medical associations, potential health effects in prefectures adjacent to Fukushima Prefecture were dismissed, as if the radioactive plume was blocked by an invisible wall at prefectural borders. This is a far cry from the precautionary principle that should be in place for the protection of public health.

Consider the Japanese government’s haste to return evacuees to their still contaminated hometowns. This must be done so things appear “back to normal” for the purpose of recovery (mostly economic), even though it is clearly impossible to decontaminate a whole community in a natural setting of mountains and forests. Radiation doses of returned residents are to be monitored to keep an additional exposure dose below the regulatory limit. (But how good is it to know what your exposure dose is after the fact?)

In essence, the health effects by the Fukushima nuclear accident are being maximally minimized.

One of the most controversial topics about the health effects of the Fukushima nuclear accident is the thyroid cancer cases detected in Fukushima children as a result of the thyroid ultrasound screening. Most of the English writings on this topic accept, at face value, certain claims made by Fukushima Medical University as well as Japanese government officials in order to dismiss any connection between the Fukushima thyroid cancer cases and radiation.

Below, some items in the March 25, 2016 editorial in Chicago Tribune, “The children of Fukushima: When medical tests mislead,” are addressed to point out the misleading information that is widespread even amongst the academic circle.

1. There is no regional difference of thyroid cancer occurrence.

The March 25, 2016 Chicago Tribune editorial states:

“Children living closer to the accident in areas of greatest contamination had no greater rate of early cancer than those living farther away.”

This essentially refers to the lack of dose response, but it might depend on how the prefecture is divided into regions.

According to the official data by Fukushima Medical University (FMU) and Fukushima Prefecture in the final report of the first round screening [1], no regional difference was reported based on the comparison amongst 4 regions—one region including 13 municipalities with the highest dose and the evacuation zone, and three other geographically-divided regions. However, topography can vary even within the same geographical region, potentially affecting the flow of the radioactive plume. In other words, regional divisions like this might mask critical differences.

On the other hand, the biggest surprise in the official comparison was the Aizu region in western part of Fukushima Prefecture where the prevalence rate of 32.6 per 100,000 was very close to the prevalence rate in the highest dose area, 33.5 per 100,000.

Read more here . http://fukushimavoice-eng2.blogspot.fr/2016/04/thyroid-cancer-in-fukushima-children.html

April 28, 2016 Posted by | Fukushima 2016 | , , | Leave a comment

Wildlife continues to suffer seriously from radiation at Chernobyl and Fukushima

At Chernobyl and Fukushima, radioactivity has seriously harmed wildlife, The Conversation,   April 25, 2016 “…..Radioactive cesium from Chernobyl can still be detected in some food products today. And in parts of central, eastern and northern Europe many animals, plants and mushrooms still contain so much radioactivity that they are unsafe for human consumption…….

 in the past decade population biologists have made considerable progress in documenting how radioactivity affects plants, animals and microbes. My colleagues and I have analyzed these impacts at Chernobyl, Fukushima and naturally radioactive regions of the planet.

Our studies provide new fundamental insights about consequences of chronic, multigenerational exposure to low-dose ionizing radiation. Most importantly, we have found that individual organisms are injured by radiation in a variety of ways. The cumulative effects of these injuries result in lower population sizes and reduced biodiversity in high-radiation areas.

Broad impacts at Chernobyl

Butterfly-grass-blue-mutateRadiation exposure has caused genetic damage and increased mutation rates in many organisms in the Chernobyl region. So far, we have found little convincing evidence that many organisms there are evolving to become more resistant to radiation.

Organisms’ evolutionary history may play a large role in determining how vulnerable they are to radiation. In our studies, species that have historically shown high mutation rates, such as the barn swallow (Hirundo rustica), the icterine warbler (Hippolais icterina) and the Eurasian blackcap (Sylvia atricapilla), are among the most likely to show population declinesin Chernobyl. Our hypothesis is that species differ in their ability to repair DNA, and this affects both DNA substitution rates and susceptibility to radiation from Chernobyl.

Much like human survivors of the Hiroshima and Nagasaki atomic bombs, birds and mammals at Chernobyl have cataracts in their eyes andsmaller brains. These are direct consequences of exposure to ionizing radiation in air, water and food. Like some cancer patients undergoing radiation therapy, many of the birds have malformed sperm. In the most radioactive areas, up to 40 percent of male birds are completely sterile, with no sperm or just a few dead sperm in their reproductive tracts during the breeding season.

Tumors, presumably cancerous, are obvious on some birds in high-radiation areas. So are developmental abnormalities in some plants and insects.

Given overwhelming evidence of genetic damage and injury to individuals, it is not surprising that populations of many organisms in highly contaminated areas have shrunk. In Chernobyl, all major groups of animals that we surveyed were less abundant in more radioactive areas. This includes birds, butterflies, dragonflies, bees, grasshoppers, spiders and large and small mammals.

Not every species shows the same pattern of decline. Many species, including wolves, show no effects of radiation on their population density. A few species of birds appear to be more abundant in more radioactive areas. In both cases, higher numbers may reflect the fact that there are fewer competitors or predators for these species in highly radioactive areas.

Moreover, vast areas of the Chernobyl Exclusion Zone are not presently heavily contaminated, and appear to provide a refuge for many species. One report published in 2015 described game animals such as wild boar and elk as thriving in the Chernobyl ecosystem. But nearly all documented consequences of radiation in Chernobyl and Fukushima have found that individual organisms exposed to radiation suffer serious harm.

There may be exceptions. For example, substances called antioxidants can defend against the damage to DNA, proteins and lipids caused by ionizing radiation. The levels of antioxidants that individuals have available in their bodies may play an important role in reducing the damage caused by radiation. There is evidence that some birds may have adapted to radiation by changing the way they use antioxidants in their bodies.

Parallels at Fukushima

Recently we have tested the validity of our Chernobyl studies by repeating them in Fukushima, Japan. The 2011 power loss and core meltdown at three nuclear reactors there released about one-tenth as much radioactive material as the Chernobyl disaster.

Overall, we have found similar patterns of declines in abundance and diversity of birds, although some species are more sensitive to radiation than others. We have also found declines in some insects, such as butterflies, which may reflect the accumulation of harmful mutationsover multiple generations.

Our most recent studies at Fukushima have benefited from more sophisticated analyses of radiation doses received by animals. In our most recent paper, we teamed up with radioecologists to reconstruct the doses received by about 7,000 birds. The parallels we have found between Chernobyl and Fukushima provide strong evidence that radiation is the underlying cause of the effects we have observed in both locations.

Some members of the radiation regulatory community have been slow to acknowledge how nuclear accidents have harmed wildlife. For example, the U.N.-sponsored Chernobyl Forum instigated the notion that the accident has had a positive impact on living organisms in the exclusion zone because of the lack of human activities. A more recent report of the United Nations Scientific Committee on the Effects of Atomic Radiation predicts minimal consequences for the biota animal and plant life of the Fukushima region.

Unfortunately these official assessments were largely based on predictions from theoretical models, not on direct empirical observations of the plants and animals living in these regions. Based on our research, and that of others, it is now known that animals living under the full range of stresses in nature are far more sensitive to the effects of radiation than previously believed. Although field studies sometimes lack the controlled settings needed for precise scientific experimentation, they make up for this with a more realistic description of natural processes.

Our emphasis on documenting radiation effects under “natural” conditions using wild organisms has provided many discoveries that will help us to prepare for the next nuclear accident or act of nuclear terrorism. This information is absolutely needed if we are to protect the environment not just for man, but also for the living organisms and ecosystem services that sustain all life on this planet……https://theconversation.com/at-chernobyl-and-fukushima-radioactivity-has-seriously-harmed-wildlife-57030

April 28, 2016 Posted by | environment, Fukushima 2016, Japan, Reference, Ukraine | Leave a comment

Indoor playgrounds help Fukushima families to deal with their very real fear of radiation

flag-japanFukushima Parents Find Relief From Radiation At Indoor Playgrounds http://voices.nationalgeographic.com/2016/04/25/fukushima-parents-find-relief-from-radiation-at-indoor-playgrounds/ by Ari Beser in Fulbright National Geographic Stories on April 25, 2016 FUKUSHIMA, Japan—One of the biggest health problems facing Fukushima after the 2011 nuclear disaster are not directly caused by radiation exposure.

Instead, it’s the fear of exposure that has driven rates of childhood obesity in the past five years, according to the Director of Internal Medicine, Dr. Sae Ochi, M.D. who has spent the last five years researching the social impact of the nuclear disaster.

Parents who are worried about their children being exposed to radiation have discouraged them from playing outside, which has led to more sedentary activities among Fukushima youth.

Their fears are not unfounded. For one, radiation levels have decreased in the prefecture, but not disappeared entirely, according to safecast, the citizen science radiation monitoringprogram. 

And children are most susceptible to radiation exposure, according to the American Thyroid Association. It can cause underactive thyroids, thyroid nodules, and even cancer in kids.

“Its not that the parents shouldn’t fear radiation,” says Ochi, “it’s just that radiation concerns have led to unhealthy practices, when it should be the opposite. People living in areas where radiation lingers should take steps to eat healthier, to move more to combat their exposure. Instead we are seeing the opposite. In lieu of eating vegetables, even vegetables from outside Fukushima, people are eating processed junk food, and fast foods, and staying at home at developing sedentary lifestyles.”

Though radiation-related problems may take years to manifest in children, the consequences of a lack of exercise and physical exertion are immediate.

Enter PEP Kids Koriyama, a free, publicly funded indoor playground 40 miles (64 kilometers) west of the crippled nuclear reactor in the city of Koriyama, where parents can let their kids loose without the threat of radiation.

The Benimaru supermarket chain donated the space, which used to be a storage facility, and the local city government funded the transformation into an over-the-top play area outfitted with all of the amenities a kid could want.

The playground’s interior represents Fukushima’s geography. A giant ball pit with a swing is Lake Inawashiro, Japan’s pacific coast, and mountains are painted on the wall. There’s also an indoor sand garden, a giant moon bounce, play houses, and even a kitchen. (Read “Five Years After Fukushima Nuclear Disaster, Survivors Share Their Stories.”)

“People come from all over Japan to come here. We even get families who evacuated Fukushima as far as Tokyo that come back for the day and let their kids play here,” said Midori Ito, director of PEP Kids. Koriyama is not technically in the evacuation zone, and anyone who chooses to leave receives no compensation.

“I love that I can take my kids here,” mother Chime Fukase told me over the din of cheering and shouting children.

“I can’t say that my concern about radiation is at zero. … I have nowhere else to take my family. I’m grateful for PEP kids to give my daughter a place to enjoy herself,” says Fukase, who is expecting another child.

PEP Kids isn’t Fukushima Prefecture’s only indoor escape: Fukushima City has its own indoor skate park and sports facility called Channel Square. Owner Manabu Tara modeled the facility after Channel Street Skate Park in San Pedro, California.

There people can ride their boards on the ramps, practice yoga, eat and drink at the café, or attend meetings about radiation concerns at the Fukushima 30-Year Project, an NPO that researches the radiation exposure that shares space with the indoor park. It’s name is based on the 30 year half life of the most prevalent radioactive contaminant in Fukushima, Cesium 137.

But unlike PEP kids, Channel Square isn’t publicly funded—which means it’s been more of a challenge to keep Channel Square going.

“Japan doesn’t really have a crowdsourcing culture,” says Tara, “so we have to be creative about how we raise money. We want to compensate for the lack of public land the kids can play on for free, so we don’t want to raise the entrance fee.”

“However if we don’t have money,” he says, “we can’t exist.”

Ari M. Beser  is the grandson of Lt. Jacob Beser, the only U.S. serviceman aboard both bomb-carrying B-29s. He is traveling through Japan with the Fulbright-National Geographic Digital Storytelling Fellowship to report on the 70th anniversary of the atomic bombings of Hiroshima and Nagasaki and the fifth anniversary of the Great East Japan earthquake, tsunami, and nuclear meltdowns in Fukushima.  Beser will give voice to people directly affected by nuclear technology today, as well as work with Japanese and Americans to encourage a message of reconciliation and nuclear disarmament. His new book, “The Nuclear Family,” focuses on the American and Japanese perspectives of the atomic bombings.

April 28, 2016 Posted by | Fukushima 2016 | Leave a comment

Toshiba to lose 260 billion yen due to losses over Westinghouse nuclear power subsidiary

flag-japanFlag-USA Toshiba expects loss over Westinghouse to reach 260 bil. yen , Kyodo News, 26 April 2016 Toshiba Corp. said Tuesday it plans to book an asset impairment loss of around 260 billion yen ($2.3 billion) in its results for the year to March 31 by writing down the value of its U.S. nuclear power subsidiary Westinghouse Electric Co. acquired in 2006……

 Toshiba said its operating loss for the year is now pegged at 690 billion yen, compared with its earlier forecast of 430 billion yen, on sales of 5.5 trillion yen against the earlier projection of 6.2 trillion yen.

“We don’t think our financial conditions have stabilized…so reinforcing our (financial) standing is the biggest challenge in the current business year,” President Masashi Muromachi told a press conference.

In computing the write down on Westinghouse, Toshiba reviewed the $2.93 billion in goodwill, or 350 billion yen based on the exchange rate at that time, it booked when acquiring the U.S. nuclear plant builder.

The goodwill, calculated by deducting from the purchase price the value of the assets and liabilities acquired, was reported on the balance sheet as a fixed asset…….http://kyodonews.net/news/2016/04/26/58694

April 28, 2016 Posted by | business and costs, Japan | Leave a comment

Series of earthquakes is delaying Japan’s ‘nuclear revival’

nuke-earthquakeflag-japanJapan’s Worst Quake Since 2011 Seen Delaying Nuclear Starts http://www.bloomberg.com/news/articles/2016-04-26/japan-s-worst-quake-since-fukushima-seen-delaying-nuclear-starts         sstapczynski  

  • Earthquakes on southern island of Kyushu kill 49 people
  • Japan lawyer group renews call for shutdown of Sendai reactors
Japan’s biggest earthquake in five years may slow a government plan to restart the country’s atomic fleet that was shuttered amid safety concerns after the March 2011 earthquake and tsunami that caused the triple meltdown at Fukushima.

A series of earthquakes, including amagnitude-7.3 tremor that struck about 119 kilometers (74 miles) from the Sendai nuclear facility on the southern island of Kyushu this month, destroyed hundreds of homes, snapped bridges and left at least 49 people dead. It has also revived an effort to halt the plants’ operations.

 The events may delay Prime Minister Shinzo Abe’s goal of returning the country’s nuclear power plants to operation. About 60 percent of Japanese citizens oppose restarting reactors, according to a Nikkei newspaper poll from February, and the earthquake is intensifying pressure on the country’s nuclear regulator to vet safety rules.

“Nuclear is under a magnifying glass now, so even the smallest problem can create big delays,” Michael Jones, a Singapore-based gas and power analyst at Wood Mackenzie Ltd. said in an e-mail. “Fukushima has changed everything, and earthquakes and volcanoes are only making things worse.”

Transport Disruptions

Trains and highways were damaged in the Kyushu earthquake and if there is a nuclear accident from another earthquake or volcanic eruption, evacuations may be difficult, Datsugenpatsu Bengodan, a group of lawyers working to wean Japan off nuclear power said in an April 19 statement. The group said Kyushu Electric Power Co.’s Sendai No. 1 and 2 reactors, which were the first to restart under post-Fukushima safety rules last year, should be shut.

An e-mail to Japan’s Nuclear Regulation Authority outside of normal business hours wasn’t immediately answered.

 Evacuation Procedures

“Given this is the largest earthquake in over a century in Kyushu that has caused significant damage to infrastructure, it could slow down the pace of restarts,” said Tom O’Sullivan, founder of Mathyos, a Tokyo-based energy consultant. “It may now be even more imperative that emergency evacuation procedures are thoroughly tested.”

A nuclear accident at Sendai would require the evacuation of about 5,000 people in the surrounding 5 kilometers and more than 200,000 would need to seek immediate shelter within a 5- to 30-kilometer radius, according to a local government simulation from 2014.

The NRA, Japan’s nuclear regulator, said on April 18 that it sees no need to shut the two Sendai reactors. A high court on April 6 upheld a ruling that the Sendai reactors can withstand seismic damage and don’t pose a risk to the surrounding area.

A local court issued an injunction in March preventing the operation of Kansai Electric Power Co.’s Takahama No. 3 and 4 reactors, questioning whether evacuation plans and tsunami prevention measures — which had been endorsed by the government — were robust enough.

The earthquake near Japan’s only operating reactors “may boost the nation’s anti-nuclear sentiment,” Joseph Jacobelli, an analyst at Bloomberg Intelligence, said in an April 22 note. “Technical and political obstacles mean even those units approved for restart are returning at a snail’s pace.”

April 27, 2016 Posted by | Japan, politics | Leave a comment

Toshina writes down the value of its nuclear business

Toshiba to Take $2.3 Billion Write-Down on Nuclear Business, WSJ, Toshiba also revised earnings guidance for the fiscal year, forecasting a larger operating loss By TAKASHI MOCHIZUKI April 26, 2016

TOKYO—Toshiba Corp. said it would write down the goodwill value of its nuclear-power-plant business, including its U.S. subsidiary Westinghouse Electric Co., after years of criticism that the company’s outlook on the business was too optimistic.

The electronics giant said Tuesday that it would book the one-time loss of ¥260 billion ($2.3 billion) to reflect the change in the business’s earnings prospects and Toshiba’s financial standing.Toshiba’s recent financial scandal led to downgrades of its debt,which will make borrowing more expensive and so hurt profits.

The impairment charge will be recorded in results for the fiscal year that ended on March 31, due to be reported May 12…….http://www.wsj.com/articles/toshiba-to-take-2-3-billion-write-down-on-nuclear-business-1461654771

April 27, 2016 Posted by | business and costs, Japan, USA | Leave a comment

Microscopic particles in oceans – From Fukushima to the USA in 1277 days

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A new study published in Nature Communications reveals the global dispersal of plankton, but also provides insights for distribution of plastics, radioactive material and other pollutants.

New study in Nature Communications models global connectivity of the entire planet’s ocean surface

The distance between Fukushima and the west coast of the United States is about 8700 kilometres. If microscopic particles – like phytoplankton or radioactive isotopes – were to travel that fifth of the world’s circumference, it seems like that would take ages.

However, the world is not so big after all, since that is not actually the case.

A new study co-authored by centre researcher, James Watson, recently published in Nature Communications found that the earth’s global surfaces are highly connected.

http://www.nature.com/ncomms/2016/160419/ncomms11239/full/ncomms11239.html

By investigating the largely underexplored and rarely quantified mechanisms of global surface connectivity, Watson and his co-author Bror Jonsson from Princeton University found that microscopic particles can reach all regions of the ocean in only a decade.

This study emerged from contrasting camps of ideas about planktonic community dispersal in ocean ecosystems: one suggesting that everything is connected and environmental conditions decide where species live; another proposing that spatial isolation leads to genetically distinct species; and another suggesting that both of those ideas fail to tell the whole story.

On top of that, the time it takes for planktonic communities to travel around the ocean surface is a question that is still largely unresolved.

“These short surface-connection times are relevant to anyone studying dispersion in the surface ocean beyond planktonic species, including radioactive materials, plastics and other forms of pollution”

James Watson, co-author

Modeling global surface current connectivity
To tackle these inconsistencies in understanding and questions about time, Watson and his co-author create a model to track particles moving across the global ocean surface. To do this they use a number of different concepts and techniques.

This study uses minimum connection time, the fastest time that particles can travel from one location to another, instead of the commonly used expected connectivity time, which uses mean travel time. Watson notes there are two advantages to this approach.

“Minimum connection time is a more appropriate metric for phytoplankton and bacterial connectivity since asexually reproducing organisms have high reproductive output that attenuates low dispersal probabilities. Additionally, mean transit times in the global ocean are not well defined, as water can recirculate eternally and, hence, every particle seeded in a given patch eventually will reach all other patches if enough time is provided,” explains Watson.

Calculating minimum connection times from Lagrangian particle tracking, a method for understanding computational fluid dynamics, the authors described the global ocean as a network “with patches in the ocean as nodes and minimum connection times as edges connecting the nodes.”

The authors then considered each patch pair and multi-step connections, or in other words particles traveling along a number of patches, and applied Dijkstra’s algorithm, commonly used for finding the shortest path between nodes, to create a network of minimum connection times between every region of the ocean’s surface.

The authors point out that while this global network does account for timescales of physical connectivity, they do not account for environmental factors which undoubtedly play a role in connectivity.

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Radioactive reality
While the idea for this study emerged from tiny plankton, the results have blue whale-sized relevance for other ocean surface traveling objects.

Furthermore, these results could in the future help us understand and prepare for how long it takes harmful particles to connect across the globe – like from Fukushima to western United States, or plastics aggregating along the coasts.

“A real example is the 2011 Fukushima disaster, in which a Japanese nuclear reactor released a large quantity of radioactive isotopes into the Pacific Ocean. Traces of radioactivity were detected on the Pacific Coast of the US in November of 2014 – 3.6 years later. Our estimated minimum connectivity time between the Fukushima release site and its detection site of the US west coast is 3.5 years,” explains Watson, an indirect verification of their method.

From a planktonic perspective, the results suggest that planktonic communities may be able to keep pace with climate change by changing locations to better suit their preferred environmental niche.

In a bigger global perspective, Watson concludes that these results, “quantify the effects of global-scale dispersal on how marine communities can adapt to their changing ocean environment.”

The timescales of global surface-ocean connectivity

http://www.nature.com/ncomms/2016/160419/ncomms11239/full/ncomms11239.html

From Fukushima to the USA in 1277 days

http://www.stockholmresilience.org/21/research/research-news/2016-04-21-from-fukushima-to-the-usa-in-1277-days.html

Global surface-ocean connectivity

https://www.youtube.com/watch?v=JzF2U28ruvg

April 22, 2016 Posted by | Fukushima 2016 | , , , , | Leave a comment

Time-lapse of the Kyushu earthquakes for a week since April 14th

The epicenter was moving this way for one week time in Kumamoto earthquake.
680 plus earthquakes in just a few days.
But the Japanese Nuclear Regulation Authority declares that the Sendai nuclear plant is safe!!!

https://youtu.be/nzPfpT1cEJc

April 22, 2016 Posted by | Japan | , | Leave a comment

Fukushima city government donated 10,000 bottles of their tap water to Kumamoto city

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On 4/18/2016, Fukushima city Waterworks Bureau donated 10,000 bottles of their tap water to Kumamoto city.

Kumamoto city is one of the main disaster areas of 2016 Kumamoto earthquakes.

Fukushima tap water is named “Fukushima water” by the city government and obtained “Monde Selection” in 2015 and 2016 for its taste.

https://www.city.fukushima.fukushima.jp/suidou/?p=15191

https://www.city.fukushima.fukushima.jp/suidou/?p=7982

http://fukushima-diary.com/2016/04/fukushima-city-government-donated-10000-bottles-of-tap-water-to-kumamoto-city/

 

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April 22, 2016 Posted by | Japan | , | Leave a comment

Fears grow as Takahama reactors near restart

Furthermore those reactors in case of nuclear accident are much more dangerous because they are using  the MOX fuel, with contains lethal plutonium added to uranium.

OSAKA – As two aging reactors in the town of Takahama, Fukui Prefecture, move toward restart, safety concerns are growing in neighboring prefectures and municipalities within 30 km of the plant.

Kansai Electric Power Co.’s Takahama No. 1 and 2 reactors are over 40 years old, but the utility has applied for a 20-year extension. On Wednesday, the Nuclear Regulation Authority officially gave the reactors the green light, signaling they meet the fundamental safety standards needed for reactivation.

Although additional tests and inspections are needed before the reactors can resume operation, the potential first-ever restart of two units that are more than four decades old has neighboring communities worried.

The Sea of Japan coastal city of Maizuru, Kyoto Prefecture, parts of which lie 5 km from Takahama, would be on the front lines of any disaster response in the event of an accident, and Mayor Ryozo Tatami expressed specific concerns Wednesday.

“At present, has the safety of the plant been confirmed? We need scientific and technological explanations. The No. 1 and 2 reactors were envisioned and constructed to operate for 40 years,” Tatami said. “We also need documentation from when the plant was originally built that proves it’s possible to operate the reactor for 60 years, especially since the core cannot be replaced.”

Caution by Tatami in particular over restarting Takahama Nos. 1 and 2 could impact the stance of other Kansai leaders.

A small part of northern Shiga Prefecture lies within 30 km of Takahama, and Gov. Taizo Mikazuki expressed concern this week about running old reactors that could leak radiation into Lake Biwa, as well as the problem of storing additional nuclear waste generated by the reactors.

While gaining approval for restarts from heavily pro-nuclear Takahama and Fukui Prefecture is expected to be relatively easy, Kepco is certain to face calls from other Kansai-area prefectures to provide detailed explanations of why it needs to restart two aging reactors before permission for their restart is given.

It is also likely to face questions about whether the utility and NRA are cutting corners in order to make the July 7 deadline for formal permission to restart. If that deadline is missed, the reactors are supposed to be scrapped.

http://www.japantimes.co.jp/news/2016/04/21/national/fears-grow-takahama-reactors-near-restart/#.VxkemFCvirW

April 22, 2016 Posted by | Japan | , , | Leave a comment

Growing concern over Sendai Nuclear Plant as earthquakes continue in the region

sendaiKyushu Earthquake Swarm Raises Concerns Over Nuclear Plant Safety IEEE Spectrum, By John Boyd 21 Apr 2016 The populous island of Kyushu in southwest Japan has been shaken by hundreds of earthquakes and aftershocks over the past eight days, and there is no immediate end in sight to Mother Nature’s upheavals.

The tremors have impacted manufacturing for some companies in the auto and electronics industries, while concerns are growing over the safety of Japan’s two active nuclear reactors (the only two presently online), which are located about 120 km south of where the main shaking is occurring

The first major quake, 6.5 in magnitude, struck on April 14. A second more disastrous tremblor measuring 7.3 hit the area at 1:25 am on Thursday, April 16, injuring thousands of people, and killing dozens. Water, electricity and gas services have been disrupted. Buildings, roads, and bridges have been destroyed, complicating search, rescue and aid efforts for emergency workers and the Japan Self-Defense Force. The quakes are occurring inland, so there are no tsunami warnings.

As the quakes continue, fears are growing over the safety of two nuclear reactors in the Sendai Nuclear Plant operated by Kyushu Electric Power Co. (Kyuden). According to the Japan Times, citizens’ fears are rising, while mayors from more than 100 cities have called on the central government “to re-evaluate the way earthquake safety standards for nuclear power plants are calculated.”……http://spectrum.ieee.org/energywise/energy/nuclear/kyushu-earthquake-swarm-raises-concerns-over-nuclear-plant-safety

April 22, 2016 Posted by | Japan, safety | 1 Comment

Dumping tritium from Fukushima into sea is best option: ministry

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The industry ministry concluded that releasing diluted radioactive tritium into the sea is the most feasible option in dealing with contaminated water accumulating at the Fukushima No. 1 nuclear power plant.

The ministry’s working group said at a meeting on April 19 that separating tritium from the contaminated water is proving extremely difficult, and that four other options studied about disposal were either too time-consuming or expensive.

Releasing the water into the sea would cost 3.4 billion yen ($31 million) and take seven years and four months to complete, according to the group.

Tokyo Electric Power Co., the operator of the embattled nuclear plant, will decide on a disposal method based on the group’s findings. The utility has said it will not release treated water that still contains radioactive substances into the sea without gaining the understanding of local fishermen.

TEPCO has been struggling to ease the buildup of polluted water at the nuclear plant. Every day, tons of groundwater become contaminated with radioactive substances after entering damaged reactor buildings.

About 800,000 tons of water containing tritium are stored at the nuclear complex. This water was mostly used to cool melted nuclear fuel in the affected reactors.

TEPCO has been using a device called ALPS (advanced liquid processing system) to eliminate 62 kinds of radioactive substances, including cesium, from the water. But it cannot remove tritium.

The Ministry of Economy, Trade and Industry solicited ideas from the public on how to separate tritium from the polluted water. Six companies and one university submitted proposals.

However, experts in and out of Japan who evaluated the proposed methods concluded that none of the plans could be put into practical use in the near future.

The ministry’s working group narrowed its analysis to the five options that involved disposing of water containing tritium.

One suggestion was to inject the polluted water into deep layers of the Earth. Another proposal was to electrolyze the tritium-contaminated water and release it into the atmosphere.

The highest estimated cost in the proposals was 388.4 billion yen, with the longest period for completion reaching 13 years, according to the group’s study.

Ministry officials concluded that releasing water containing tritium into the sea after diluting it would be most reasonable in terms of both cost and time.

http://www.asahi.com/ajw/articles/AJ201604200041.html

April 21, 2016 Posted by | Fukushima 2016 | , , | 2 Comments

Japan’s Government Pressure on Press Freedom of Expression

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U.N. Special Rapporteur David Kaye speaks at a news conference at the Foreign Correspondents’ Club of Japan in Tokyo on Tuesday.

U.N. rapporteur on freedom of expression slams Japan’s ‘press club’ system, government pressure

After a week of conducting interviews, a United Nations expert on freedom of expression concluded Tuesday that Japan’s media independence is being jeopardized by government pressure, however inconspicuous it may be.

David Kaye, U.N. special rapporteur on the promotion and protection of the right to freedom of opinion and expression, also said the organizational structure of the media industry in Japan has undermined journalists’ ability to counter such pressure.

“The theoretical possibility of government regulation and organization … combined cause media freedom to suffer; media independence to suffer,” Kaye told a news conference Tuesday at the Foreign Correspondents’ Club of Japan in Tokyo.

It was his first official news conference since his original visit in December was postponed at the request of the Foreign Ministry because it was “unable to arrange meetings” with officials at that time.

Kaye pointed out there is “serious concern” about the ability of journalists to independently report on sensitive issues such as nuclear power due to the pressure exerted when the government flexes its regulatory muscles.

In February, communications minister Sanae Takaichi ominously noted that under the Broadcast Act the government can legally suspend the licenses of TV stations and networks if their programming is found to contain political bias.

Although government officials insist the remark was simply a factual statement about the law, the existence of the policy itself may reasonably be perceived as a threat to media freedom in Japan, Kaye said.

“I think this is a significant problem that the Broadcast Act allows for regulation by the government of the media,” he said, adding the law should be amended to prevent the state from being in a position to adjudicate what constitutes “bias.”

Meanwhile, Kaye also pointed out that the kisha club system in Japan — media associations formed around certain groups and government organizations through which reporters are granted access — should be abolished to regain media independence.

“Journalists in those kisha clubs tend to be focused very much together in this same kind of social network. And I think that allows for mechanisms of pressure. It may be soft pressure. It may be a kind of peer pressure that’s very difficult to resist,” he said.

“It’s common for journalists (in general) to describe their role as a watchdog … to not just take government information as a kind of scribe and copy it and put it online or put it in a newspaper or repeat it on a broadcast network. But (the role is) to question it; it’s to question government policies. It’s to question government conclusions,” Kaye said.

“It is normal for government to push back against journalists’ reporting. … But it’s the role of the media to push back on the government as well,” he said.

Over a weeklong trip that began April 12, Kaye met with various national authorities, nongovernmental organizations, journalists and media to exchange opinions and to examine the situation of freedom of expression in Japan.

Before officially inviting Kaye this time, the government postponed his originally scheduled visit in December, a move that ended up drawing heavy criticism. Freedom advocates said the government was trying to prevent Kaye from highlighting serious issues over press freedom in Japan in the international spotlight.

Asked about the rescheduling, Kaye said he can only refer to what he was told by the government, which said many officials were unavailable due to the budget compilation process.

Meanwhile, Kaye praised Japan’s Internet freedom and widespread broadband accessibility, saying the country needs to work to remain a role model for other nations that practice censorship of online discourse.

The full report on Kaye’s investigation will be published in 2017 to be submitted to the U.N.’s Human Rights Council.

http://www.japantimes.co.jp/news/2016/04/19/national/u-n-rapporteur-freedom-expression-slams-japans-press-club-system-government-pressure/#.VxbkGtR97Gh

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Japanese Prime Minister Shinzo Abe arrives at the White House during a visit last month.

How Japan came to rank worse than Tanzania on press freedom

The state of press freedom in Japan is now worse than that in Tanzania, according to a new ranking from the non-profit group Reporters Without Borders.

Japan came in 72nd of the 180 countries ranked in the group’s 2016 press freedom index, falling 11 places since last year.

Europe’s media was deemed to have the most freedom this year, but the situation has worsened significantly in most of the Asia-Pacific region.

For Japan’s journalists, things have taken a turn for the worse relatively recently. Just six years ago, the country ranked 11th in the world.

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Japan’s poor performance on press freedom is particularly surprising given its standing as one of the world’s leading developed countries. The island nation of 125 million people has the world’s third-largest economy and a vibrant democracy whose postwar constitution guarantees freedoms of speech, press and assembly.

“With Japan hosting the G7 meeting next month of leading democracies, the press crackdown is an international black eye for Japan and makes it an outlier in the group,” said Jeff Kingston, a professor of history and director of Asian studies at Temple University and author of the book “Contemporary Japan: History, Politics, and Social Change since the 1980s.”

The 2011 meltdown at the Fukushima nuclear power plant set the stage for the erosion of press freedoms, Kingston said. “Japan’s slide in the rankings began with the incomplete coverage of the Fukushima meltdowns and the government’s efforts to downplay the accident; Tokyo Electric Power Company (and Japan) denied the triple meltdown for two months,” he said. “Sadly, the Japanese media went along with this charade because here it is all about access. Those media outlets that don’t toe the line find themselves marginalized by the powers that be. Since [Fukushima], Japan’s culture wars over history, constitutional revision and security doctrine have been fought on the media battlefield.”

When Prime Minister Shinzo Abe returned for a second term in 2012, five years after he resigned abruptly amid growing unpopularity in 2007, his administration began cracking down on perceived bias in the nation’s media.

At first, the media didn’t hold back in criticizing his administration. The press lambasted Deputy Prime Minister Taro Aso for saying that Japan should learn from the way the Nazi party stealthily changed Germany’s constitution before World War II. But critics say Aso’s suggestion foreshadowed things to come.

Two years ago, the Abe administration pushed through a state secrets bill ostensibly designed to prevent classified information from leaking to China or Russia. But the measure allows for journalists and bloggers to be jailed for up to five years for asking about something that is a state secret, even if they aren’t aware it is one. Thousands protested the law when it was passed on Dec. 6, 2013.

Abe’s friend, conservative businessman Katsuto Momii, became the head of Japan’s major public broadcasting company, NHK, in 2014, in a move that has compromised the independence of its reports. Momii has stated publicly that NHK “should not deviate from the government’s position in its reporting.”

Abe’s Liberal Democratic party also recently proposed a constitutional amendment that would allow the government to curtail speech that “harms the public interest and public order.”

In June 2015, members of the party urged the government to punish media outlets critical of the government and pressure companies not to advertise with them.

This year, Abe’s Communications Minister Sanae Takaichi threatened to shut down news broadcasters over “politically biased reports” — something TV and radio laws in Japan empower her to do.

A week later, three television presenters who had been critical of the Abe administration were all removed from their positions.

Veteran reporters in Japan have criticized Abe’s government for applying pressure to reporters, but also decry the increasing self-censorship going on in the country’s press. “To me, the most serious problem is self-restraint by higher-ups at broadcast stations,” Soichiro Tahara, one of the country’s most revered journalists, told reporters last month.

“The Abe administration’s threats to media independence, the turnover in media personnel in recent months and the increase in self-censorship within leading media outlets are endangering the underpinnings of democracy in Japan,” Reporters Without Borders concluded in its report released this month about declining media freedoms in Japan.

“Independence of the press is facing serious threats,” David Kaye, U.N. special rapporteur on the promotion and protection of the right to freedom of opinion and expression, said during a news conference at the Foreign Correspondents’ Club of Japan on Tuesday. “Many journalists who came to me and my team asked for anonymity in our discussions. Many claimed to have been sidelined or silenced following indirect pressure from politicians.”

The state originally invited Kaye to visit last December, but the trip was canceled abruptly after Japanese authorities claimed to be unable to set up meetings in time.

Kaye called for Japan’s Broadcast Law to be revised to ensure press freedom, and criticized Japan’s press club structure as detrimental to an independent press. In Japan, reporters are granted access through press clubs, or “kisha clubs,” formed around groups and government organizations. They serve as gatekeepers, and typically don’t grant access to weekly magazines, like Shukan Bunshun, which excel at investigative journalism.

“Journalists in those kisha clubs tend to be focused very much together in this same kind of social network. And I think that allows for mechanisms of pressure. It may be a kind of peer pressure that’s very difficult to resist,” Kaye said.

http://www.latimes.com/world/asia/la-fg-japan-press-freedom-20160420-story.html

April 21, 2016 Posted by | Japan | , | Leave a comment